<html>
  <head>
    <title>树莓派视频流</title>
<style>
img {
  display: block;
  margin-left: auto;
  margin-right: auto;
}
</style>
  </head>
  <body>
    <h1 align="center">树莓派视频流</h1>
    <img  src="{{ url_for('video_feed') }}"/>
  </body>
</html>